What if there were a supplement that could help protect your muscles and strength as you age, relieve symptoms of depression, and maybe even slow the cognitive decline tied to Alzheimer’s disease?

Sounds promising, right?

Now, what if I told you that supplement is creatine?

If your first thought was, “Isn’t that just for bodybuilders?”, you’re not alone. For years, creatine has been typecast as a muscle builder for gym rats and powerlifters. Some people even confuse it with a steroid. (It’s definitely not a steroid!)

That reputation has kept a lot of folks—especially women—from seeing what it can actually do for them.

In reality, creatine is one of the safest and most effective supplements out there—backed by more than 1,000 studies over the last five decades.¹ And its benefits go far beyond the weight room.

In this article, I’ll break down:

What creatine actually is (and what it’s not)
The wide-ranging benefits for your muscles, brain, and mental health
Why women can benefit just as much as—or even more than—men
What to buy and how much to take

If you haven’t given creatine a second thought, it’s time for a closer look: It might just be the best supplement you’ve never tried.

What Is Creatine?

Creatine is a natural compound your body makes from amino acids, and you also get some from food—mainly red meat and fish.

About 95 percent of the creatine in your body is stored in your muscles.^2,3 The rest is found in places like your heart and brain.

Think of creatine as a backup power source, helping your cells quickly produce energy when they need it most.

That’s why it’s so well-known in the fitness world. It can help you complete more reps and lift heavier weights, which leads to increases in strength and muscle.

But the same energy support that helps you in the gym may also benefit your brain, mood, and how your body functions as you age.

What Creatine Supplementation Can Do for You

Research shows that most people’s creatine stores are only 60 to 80 percent full.⁴ It’s not hard to see why: Red meat is the best food source of creatine, but a 6-ounce serving of steak or hamburger contains just 0.7 grams (less than a gram).⁵

That’s a relatively small amount of creatine overall. For example, a typical supplementation dose of creatine is 5 grams—equivalent to about 2.4 pounds of uncooked red meat.²

Now have a look at this chart, which shows creatine levels in vegetarians, omnivores (people who eat both meat and plants), and those who “loaded” creatine by taking 20 grams every day for a week.⁶ (Note: You can achieve the same “loaded” levels by taking 5 grams a day for a longer period of time, as you’ll see in the dosing section.)

Essentially, supplementing with creatine allows you to dramatically increase your body’s creatine stores beyond what you can typically get from food.

Why does that matter? There are a few reasons, but here are three big ones…

1. Creatine Helps You Stay Strong as You Age

As you get older, it gets harder to hold on to muscle—and that can affect everything from balance and mobility to metabolism and independence.

Creatine can help. In a 2021 meta-analysis of 16 randomized controlled trials, adults over 50 who took creatine while doing resistance training gained an average of nearly 3 pounds more lean mass than those who did the same training without it.⁷

That’s not a small boost—it’s a meaningful difference that could help offset the natural muscle loss that comes with aging.

When combined with resistance training, creatine is highly effective for helping you build muscle and strength—which is critical for staying active and independent as you age.

2. Creatine May Help Fight Depression

Your brain uses creatine, too. It helps keep energy production steady inside brain cells, particularly in areas that regulate mood and cognition.

Low brain creatine levels have been linked to more severe depressive symptoms—especially in women. On the flip side, University of Utah scientists reported that young women who consumed the most creatine were significantly less likely to suffer from depression than those who ate the least.⁹

There have only been three experimental studies on creatine supplementation for depression, but the results, while preliminary, have been encouraging.^10,11,12

In one randomized controlled trial, adult women who added 5 grams of daily creatine to their antidepressant experienced faster and greater improvements than those taking the antidepressant alone—reducing symptoms in just 2 weeks, compared to the typical 4–5 weeks it usually takes for antidepressants to show an effect.¹⁰

3. Creatine Might Help You Stay Sharp

A small pilot study from the University of Kansas tested high-dose creatine in people with Alzheimer’s disease.¹³ After taking 20 grams per day for 8 weeks, participants saw an 11 percent increase in brain creatine levels and showed significant improvements in memory, attention, and executive function.

There was no control group, so the results have to be taken with caution. But researchers believe the benefit may come from creatine’s ability to support mitochondrial function and help reduce inflammation and oxidative stress in the brain.

Here’s another interesting brain benefit: Emerging research suggests that creatine may help protect mental performance when your brain is under strain, such as during sleep deprivation.^14,15,16 In a 2026 small study of healthy adults kept awake for 21 hours, a single large dose helped them stay sharper on tasks involving focus, reaction time, problem-solving, and quick thinking compared with placebo.¹⁶ The dose was 0.2 grams per kilogram, which works out to about 14 grams for a 155-pound person or 18 grams for a 200-pound person.

(If you’re looking for a complete nutrition, lifestyle, and supplementation program to improve and optimize your cognitive function and mental well-being, check out my all-new “Brainshaping” program.)

Is Creatine Good for Women?

Yes—potentially even more so than for men.

Women tend to have significantly lower creatine stores than men—by as much as 70 to 80%, according to research.⁸ That’s likely due to a combination of lower dietary intake and differences in muscle mass.

And because women are also more likely to struggle with depression, creatine’s brain benefits may be especially meaningful.¹⁷

Still, many hesitate to try it. The most common concern? Weight gain. But studies show that worry is mostly unfounded.⁸

While some men may see an increase on the scale during a short-term “loading” phase—due to water being drawn into the muscle cells—that effect is rarely seen in women. And even when it does occur, it reflects healthy cellular hydration, not fat gain or bloating.

The Best Way to Supplement with Creatine

The best-studied and most effective form of creatine is creatine monohydrate. It’s widely available, affordable, and backed by decades of research.

I take Thorne Creatine

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